Water Technologies

Wallace & Tiernan Gas Feed Systems

V2000 Gas Feed Models

growth and algae control in irrigation systems

Municipal or Industrial Waste Treatment Disinfection of municipal sewage effluent and industrial waste streams

Chemical Processing Treatmentofindustrialwastesfrom - metal finishing - pulp and paper operations - chemical plants - food processing plant discharges

Industrial Process water Taste and odor control in bottling plants and breweries Temperingwatertreatmentandbleachinginflour mills Highwaterpurityinelectronics,pharmaceuticals, and the cosmetic industry

Key Benefits:

Versatile floor-mounted or wall- mounted configuration provides for operator convenience and stable control platform

Large 10 flowmeters for the highest degree of readability and accurate indication of feed rate

Flexible control options from manual to sophisticated fully automatic systems

IntroductionSiemens Water Technologies chlorination equipment has the benefit of more than 90 years of experience in gas feed technology. The V2000 family of chlorinators consists of the Series V2000 floor-mounted unit, available in a variety of configurations with capacities up to 10,000 lbs/day (ppd) and a more compact wall-mountedV2000 with identical reliability and performance. The wall-mounted unit has capacity up to 3000 lbs/day (ppd) of chlorine per hour.

Safe all-vacuum operation using accurate, reliable V-notch gas flow control Large 10 flowmeters for the highest degree of readability Frontpanel liftsoffforeasyaccesstocomponents requiring routine service Flexible control from manual to fully automatic utilizing a specifically designed disinfection controller Vacuum regulators with unique, integral double check valves that significantly minimize the possibility of venting gas to the atmosphere Built-in non-isolating, automatic switch-over for continuous operation and complete gas withdrawal from any container. Handles all water treatment gases - chlorine, ammonia, sulphur dioxide and carbon dioxide Complete design and system supply of all gas feeding and handling equipment, residual analyzers, control systems, gas detectors and accessories.

Typical applicationsMunicipal or Industrial Water Disinfectionofpotablewater Treatment of cooling water to inhibit biological

Vacuum regulating valvesVacuum regulating valves are made of rugged plastics and metals to withstand full supply pressure. Manually operated valves contain a gas shutoff position to enable container changes without admitting air, dirt or moisture to the control module and without shutting off the injector. These valves are factory set to reduce gas pressure to optimum operating vacuum and can be serviced without disturbing adjustments. Filters protect control components from impurities in the gas.

The 500 ppd vacuum regulator has a unique built-in secondary check valve, designed to confine gas under pressure should dirt build up on the primary valve seat. The pressure relief vent is built into the regulator housing or can be mounted remote. The 3000 ppd and 10,000 ppd vacuum regulators utilize a unique pressure check/pressure relief valve designed to minimize the possibility of gas being released to the atmosphere. This is a double check system utilizing two valves that will not open to allow gas flow unless a vacuum is present. In order for gas to be vented, both valves would have to fail, which is extremely unlikely.

3000 ppd capacity vacuum regulator-check unit

For reliability with evaporators, the vacuum-regulating valve used with the 10,000 ppd module has an electric operator. It is designed to give positive shut-off of the chlorine supply should evaporator temperature or water level fall below the operating limit or should power fail. The vacuum-regulating valve also has a low-temperature switch designed to close the electric operator and activate an alarm in the event of an evaporator malfunction. The electric operator and the low-temperature switch are also available with a 3000 ppd vacuum-regulating valve.

FeaturesV-Notch gives superior gas-flow controlThe V-notch orifice consists of a precisely grooved plug sliding in a fitted ring. Any position of the plug in the ring results in a specific orifice size and corresponding feed rate. This results in accurate gas-flow control and excellent repeatability. Control ranges from manual to sophisticated automatic arrangements. The V-notch resists sticking and corrosion: manufactured in a chemical-resistant, self-lubricating plastic.

Front accessThe chlorinators front panel lifts up and out for easy access to components that are most frequently serviced, such as the V-notch orifice and flowmeter.

Dedicated automatic controllerThe Siemens Water Technologies V-notch Controller is designed specifically for chlorination/disinfection systems and is available in two arrangements. One is for flow-proportional-control systems; the other is for systems based on residual control for combined residual-flow proportional control. The controller may be mounted in the chlorinator front panel or remote. Siemens Water Technologies Controllers feature a user-friendly approach to all operator functions, and fast, easy calibration.

Simplified interconnectionV2000 Chlorinators and their instrumentation are in space-saving modules. In an inter-connected system, they form a functional, panel-like array, often saving the cost of a custom panel. Systems are custom-selected from standard modules, not custom built, and are shipped as systems. Removable side panels permit piping and wiring to be run from module to module internally. There is no external interconnecting piping or wiring. Coded terminal strips and accessible piping connections make installation easy. Systems can be pre-tested under simulated operating conditions to save time and money at start-up.

or mounted remote. All others are remote. Injector materials resist corrosion and erosion.

OperationIn all V2000 Chlorinators, the system operates under a vacuum produced at the aspirator-type injector. Vacuum is transmitted to the control module and then to the vacuum-regulating valve by plastic pipe or tubing.

Gas enters the vacuum-regulating valve. Here a diaphragm senses vacuum on one side and atmospheric pressure on the other. Force on the diaphragm displaces a spring-loaded stem off of its seat. This tends to maintain the proper operating vacuum ahead of the control module and permits gas to flow toward the control module.

Still under vacuum, gas enters the control module. Its flow rate is measured as it passes through the flowmeter and controlled at the V-notch by changing orifice area. At this point, gas flow is controlled by a differential-regulating valve. This valve maintains a constant differential across the V-notch.

In the 10,000 ppd chlorinator, a combination vacuum-trimmer and drain-relief valve is included, it relieves to drain any water which might force its way past the ball check in the injector. Also, by trimming the powerful injector vacuum, this valve acts as an accessory to the differential-regulating valve.

Gas next passes to the injector. At the injector, metered gas is dissolved in the water stream. The resultant solution is discharged to the point of application.

Control methodsFeed rate of any V2000 Chlorinator is controlled by either one or both of these methods: interrupting the injector-water supply to shut off the chlorinators operating vacuum; changing v-notch-orifice area (by positioning the v-grooved plug in its ring) while holding vacuum differential across the orifice constant.

Manual controlManual control by changing orifice area (V-notch-plug position) via an adjustment knob on the front of the chlorinator.

Start-stop or program controlThis type of control is achieved with simple implementation. A V2000 chlorinators operating vacuum is started and stopped by interrupting the injector water supply. A solenoid valve or motorized valve is wired into the control circuit of a pump, switch, controller, or timer. Similar to this, a special solenoid valve can be used in the gas line to the injector. This solenoid is available with the 500 ppd capacity model only.

Non-isolating automatic switchoverTo insure a continuous supply of gas being fed, automatic switchover from an empty container is achieved by a pair of optional vacuum-regulating valves. The valve on standby is held closed by a detent-type lockout. When the on-line supply is exhausted, system vacuum rises to a higher-than-normal level. This increased vacuum overcomes the latching force of the detent and the standby supply comes on line -along with the original supply. Feeding from both containers virtually assures complete emptying of the containers. (Automatic-switchover valves are available only with capacities to 3000 ppd of chlorine and are not for use with evaporators. A liquid-chlorine switchover system is available for evaporators.)

InjectorsThe injectors used with V2000 chlorinators are designed to create a powerful operating vacuum, to save water and booster-pump horsepower.

3/4 and 1 injectors are fixed throat, differential-type constructed from PVC. They have a built-in double spring diaphragm and poppet check valves to protect against backflooding. Their design is such that, should operating vacuum stop, a spring closes the diaphragm valve.

The differential type 2 injector can be PVC with an adjustable throat or a bronze body injector is available for higher pressures with a Bellofram (water-pressure) operated adjustable throat for start-stop operation. The 3 and 4 differential injectors are plastic and rubber-lined cast iron with adjustable throats. Adjustable throat injectors permit operation to be fine tuned based on site hydraulic conditions. As these conditions change, for instance due to booster pump impeller wear, the injector can be adjusted to maintain proper performance.3/4 and 1 injectors can be built into the 500 ppd modules

3 Injector

3000 ppd capacity automatic switchover vacuum regulator-check unit

Pressure at application point75 psi is the maximum allowable backpressure with flexible plastic pipe of hose. 75 to 160 psi requires high-pressure hose or rigid pipe for the solution line. A solution pump after the injector will allow application against higher pressure.

Maximum injector-water pressure3/4 PVC 300 psi/100F 15 psi/130F1 PVC 300 psi/100F 150 psi/130F2 PVC 125 psi/100F 65 psi/130F2 bronze injector 250 psi/100F 125 psi/130F3 or 4 175 psi/100F 90 psi/130F

Connections500 ppd module:Vacuum-regulating-valve inlet is a yoke connection to cylinder, header or ton-container valve; outlet to control module is 1/2 female NPT pipe connection with threaded-compression fittings for 1/2 x 5/8 polyethylene tubing. Control module also has 1/2 female NPT with adapter for 1/2 x 5/8 tubing to injector. Injector inlet is 1 female NPT, discharge is 3/4 NPT with adapters for 3/4, 1 or 1 1/2 pipe or hose.

3000 ppd module:Vacuum-regulating-valve inlet is 1 female NPT, outlet is reversible adapter for 1 female NPT or 1 female socket. Control module inlet is reversible adapter for 1 female NPT or 1 female socket (removal of adapter provides 1 1/2 female slip joint); outlet is 3/4 female slip-joint adapter (removal of adapter provides 3/4 female NPT). Vent is threaded-compression fitting for 1/4 x 3/8 tubing. PVC injector inlet, 2 female NPT; discharge, 1 1/2 female pipe or 2 hose.

10,000 ppd module: Vacuum-regulating-valve inlet is 1 female NPT; outlet is 1-1/2 female slip-joint connection. Control module inlet and outlet are 1-1/2 female slip-joint connections. Vent is threaded-compression fitting for 1/2 x 3/8 plastic tubing. 3- and 4-inch injectors have 3 and 4 flanged pipe connections.

Electrical requirementsAutomatic arrangements require 120 volts +10%, 0.3 amp or 240 volts +10%, 0.15 amps, 115-volts, 50/60 Hz, 15 watts for heater at optional ton-container connection used with 200-lb. and 500-lb. vacuum-regulating valves and for heater on the 3000-lb. and 10,000-lb. vacuum-regulating valves. There may be other accessories such as alarms and solution or booster pumps.

Items furnishedEach V2000 Chlorinator includes a control module, vacuum-regulating valve, injector, operating-vacuum gauge, injector-vacuum gauge, rotameter for one capacity, vent screen, wall-mounting bracket and

SCU Signal Conditioning UnitThe SCU gives automatic process control in response to one process variable, typically flow rate. Housed in a NEMA 4X enclosure, the SCU features an 8-character alphanumeric LCD display with 6-button keypad and menu-driven operator prompts for simple operation, setup and calibration. Input flow scaling and output dosage adjustments allow independent scaling from 10 to 400%. See publication WT.040.100.000.UA.PS for more details.

PCU Process Control UnitThe PCU is a full feature setpoint controller. It provides automatic process control in response to two process inputs, typically flow rate and chlorine residual. The PCU can operate in any of four different control modes including residual feedback, compound loop, dual signal feed forward (for dechlorination) and flow proportional. In addition, the PCU can be configured for center-zero operation in compound loop mode when a DEOX/2000 Dechlorination Analyser is used. Housed in a NEMA 4X enclosure, the PCU features a large alphanumeric display, an LED bargraph to indicate flow input or actuator position in 5% increments, a 6-button keypad and menu driven operator prompts for simple operation, setup and calibration. For more information request publication WT.040.200.000.UA.PS.

Technical dataOperating rangeManual, 20:1; automatic 10:1.

ControlManual, remote manual, start-stop, and program. Also the following automatic modes; flow proportional; direct residual; and Compound-loop Control.

Injector-operating waterMust be reasonably clean. Pressure and flow depend on injector size, chlorinator capacity, and backpressure at application point.

Note: For ammonia service, injector-operating water with hardness level in excess of 35 mg/L may require softener.

*technical info continued on last page

FLOWMETER V-NOTCH VARIABLE ORIFICE

SUPPLY VACUUM

INJECTOR VACUUM

LOCAL MOUNTED AUTOMATIC CONTROLLER

(SCU OR PCU)

200 PPD VACUUM

REGULATOR

VENT

500 PPD VACUUM

REGULATOR

INJECTOR WATER SUPPLY

POSITIONER (AUTOMATIC

CONTROL ARRANGEMENTGAS SUPPLY

SOLUTION DISCHARGE

1 INJECTOR

(500 PPD MAX. CAP.)

VACUUM SWITCH

(OPTIONAL)

SOLUTION DISCHARGE

INJECTOR WATER SUPPLY

3/4INJECTOR

(200 PPD MAX. CAP.)

500 ppd arrangement

10,000 ppd arrangement

DIFFERENTIAL REGULATING VALVE

V-NOTCH VARIABLE ORIFICE

SUPPLY VACUUM

INJECTOR VACUUM

SOLUTION DISCHARGE

3 OR 4INJECTOR

THROAT ADJUSTMENT

INJECTOR WATER SUPPLY

VACUUM SWITCHES

(OPTIONAL)

LOCAL MOUNTED AUTOMATIC CONTROLLER

(SCU OR PCU)

VENT

FLOWMETER

VACUUM TRIMMER

VALVE

DRAIN RELIEF VALVE

INJECTORVACUUM GAUGE

(OPTIONAL

RELIEF VALVEDRAIN

PRESSURE CHECK - PRESSURE RELIEF VALVE

LOW TEMPERATURE SWITCH

HEATER

ELECTRIC OPERATED VACUUM

REGULATOR

GAS SUPPLY

3,000 ppd arrangement

LOCAL MOUNTED AUTOMATIC CONTROLLER

(SCU OR PCU)

DIFFERENTIAL REGULATING VALVE

VENT

3,000 PPD AUTOMATIC SWITCHOVER

VACUUM REGULATOR

GAS SUPPLY

GAS SUPPLY

FLOWMETER

PRESSURE CHECK PRESSURE RELIEF

VALVE

POSITIONER (AUTOMATIC CONTROL ARRANGEMENT)

VACUUM SWITCH

(OPTIONAL)

V-NOTCH VARIABLE ORIFICE

SUPPLY VACUUM

INJECTOR VACUUM

SOLUTION DISCHARGE

2 INJECTOR

THROAT ADJUSTMENT

FLOOR MOUNTED MODULE

INJECTOR WATER SUPPLY

Wallace & Tiernan and Dexox/2000 are trademarks of Siemens, its subsidiaries or affiliates. NEMA is a trademark National Electrical Manufacturers Association.

The information provided in this brochure contains merely general descriptions or characteristics of performance which in case of actual use do not always apply as described or which may change as a result of further development of the products. An obligation to provide the respective characteristics shall only exist if expressly agreed in the terms of contract.

SiemensWater Technologies1901 West Garden RoadVineland, NJ 08360www.siemens.com/wallace-tiernanwtus.water@siemens.com

Lit. No.: WT.025.055.000.UA.PS.0707Tel: 856.507.9000Fax: 856.507.4125Subject to change without prior notice2007 Siemens Water Technologies Corp.

Related optionsCylinder and ton-container valves, and connections; header valves with manifolding and connections; vent and injector inlet and outlet lines and clamps; main connections; alarms; solution and booster pumps; water-line solenoid valves; water-line pressure gauge; high-low vacuum switch and alarm; gas-line solenoid valves, safety equipment; on-line residual analysers; residual test kits and instruments; chlorine detector; two-cylinder scales; evaporators; spare parts; maintenance tools.

Overall dimensions68-1/4 H X 27-1/2 W X 16 D.

Shipping weightChlorinator and items furnished, 250-lbs.

Chlorine warningAll unattended chlorine containers and chlorination equipment should be continuously monitored for leaks. Sensitive chlorine detectors which will respond quickly to the presence of chlorine in the ambient air should be installed at each site. See Technical Information Publication WT.050.130.000.UA.PS

Carbon dioxide warningBecause of the high pressure under which carbon dioxide is contained, the vacuum-regulating valve cannot be direct-cylinder mounted. A pressure-reducing valve must be installed between the supply and the vacuum-regulating valve.

heater for vacuum-regulating valve (3000-lb. and 10,000-lb. only), removable gas filter (3000-lb. and 10,000-lb. only), lubricant, bottle of ammonia solution, gaskets, wrenches, instruction books.

Optional but necessary to complete an installation are: plastic pipe or tubing for gas supply (vacuum- regulating valve to control unit to injector); polyethylene vent tubing; rigid pipe or high pressure hose for injector inlet and discharge; main connection or fittings for the point of application.

OptionsGas Flow TransmitterNon-inferential measurement of the rate of gas flow through any V2000 gas feeder. Consists of a Nema 4X sensor transmitter with a 4-20mA output directly proportional to gas flow. See Technical Information Publication WT.050.114.000.UA.PS.

Automatic switchoverA pair of vacuum-regulating valves designed to switch to a fresh gas supply on an empty container. Liquid systems available for use with evaporators.

Ton-container KitAdapts the vacuum-regulating valve for mounting on a ton container valve. It has a drip leg to trap initial spurts of liquid and a heater to evaporate them (200-lb. and 500-lb. vacuum-regulating valves).

Flowmeters available

V2005

(500 ppd chlorine)

V2020

(3000 ppd chlorine)

3/10/20/30/50

75/100/150/200

250/300/400/500

50/75/100/150

250/500/1,000

1,500/2,000/3,000

2.3/7.5/15/35

55/75/110/156

200/230/300/390

50/75/100

150/225/475/950

1,425/1,900/2,800

3/10/20/50

75/100/150/200

250/300/400/475

50/75/100

150/225/475/950

1,425/1,900/2,800

1.4/4.5/9/23

35/45/70/95

120/140/190/240

23/32/45/70

120/240/725

975/1,400

V2100

(10,000 ppd chlorine)

1,000/2,000/3,000

4,000/5,000/6,000

8,000/10,000

950/1,900/2,800

3,000/3,900/4,500

6,200

950/1,900/2,800

3,800/4,700/5,700

7,600/9,500

475/975/1,450

1,950/2,400/2,900

3,900/4,800

Model numbers and

(maximum capacities)

Chlorine

in ppd

Carbon Dioxide

in ppd

Sulphur Dioxide

in ppd

Ammonia

in ppd